The impact of groundwater pollution on agricultural non-point source output: Taking Shitoukoumen reservoir basin as an example
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences(2013)
Abstract
In recent years, agricultural non-point source pollution problem is becoming prominent. Non-point source pollutants not only come from the surface pollutants so as the domestic animal breeding, rural domestic wastewater and waste, but also come from the polluted groundwater. Groundwater pollution has become the main contribution source of agricultural non-point source output. Taking Shitoukoumen reservoir basin as an example, this paper studies the impact of groundwater pollution on agricultural non-point source output using GWLF model, which concludes that the contribution rate of groundwater to total nitrogen output is 33%. Therefore, this paper puts forward measures according to the main causes of groundwater pollution such as pesticide, fertilizer, animal manure and sewage irrigation water, which will provide reference for agricultural non-point source pollution control in the future.
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Key words
Agricultural,Groundwater,GWLF model,Non-point source,Pollution control,Total nitrogen
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